A reverse CNAME search is possible
DNS records: how do DNS records work?
Address specifies the IPv4 address of a host.
Name server clears the authority of a zone.
Mail destination was replaced by the MX record (obsolete).
Mail forwarder was replaced by the MX record (obsolete).
Canonical name defines an alias.
Start of Authority announces details about the zone.
Mailbox domain name is experimental.
Mail Group Member is experimental.
Mail Rename Domain Name is experimental.
Zero resource is experimental.
Well known service was used for mail forwarding (now obsolete).
pointer is intended for reverse lookup.
Host information provides hardware and software details of the host.
Mailbox information is experimental.
Mail Exchange assigns a domain to e-mail servers.
text offers the option of entering additional text.
Responsible person provides information on those responsible.
AFS database is specially intended for AFS clients.
X.25 PSDN Address provides details on encapsulation via X.25 (obsolete).
The entry assigns the DNS name a ISDNNumber to (obsolete).
Route Through Record offers route-through binding without a WAN address (obsolete).
Entry allows assignment of domain names to Network Service Access Points (obsolete).
NSAP pointer was replaced by PTR (obsolete).
Signature was replaced by RRSIG (obsolete).
Key was replaced by IPSECKEY (obsolete).
Pointer to X.400 specifies MIXER mapping rules (obsolete).
Geographical position was replaced by LOC (obsolete).
AAAA provides the IPv6 address of a host.
Location contains information about the location.
Next was replaced by NSEC (obsolete).
Endpoint Identifier is intended for Nimrod Routing Architecture (obsolete).
Nimrod locator is intended for Nimrod Routing Architecture (obsolete).
Service locator informs about further services.
ATM Address provides information in the context of the asynchronous transfer mode (obsolete).
Naming Authority Pointer is an extension of the A record that allows search patterns (regular expressions).
Key exchanger enables key management for cryptography.
Cert stores certificates.
A6 was replaced by AAAA.
Delegation name specifies aliases for entire domains.
Kitchen sink allows different data to be saved (obsolete).
option is a pseudo-record in the context of DNS extension mechanisms (EDNS).
Address Prefix List lists address ranges in CIDR format.
Delegation Signer identifies DNSSEC-signed zones.
SSH public key fingerprint publishes the fingerprint for SSH keys.
IPsec key contains a key for IPsec.
RR Signature contains a digital signature for ((DNSSEC | server / knowhow / dnssec-signed-name-resolution /)).
Next Secure concatenates signed zones in DNSSEC.
DNS key contains a public key for DNSSEC.
DHCP identifier links domain names with DHCP clients.
Next Secure 3 is an alternative to NSEC.
This entry contains parameter for NSEC3.
This entry creates a TLSA Certificate Association with a domain name under DANE.
This entry creates a S / MIME Certificate Association with a domain name.
n / A
Host Identity Protocol separates endpoint tagging and location functions from IP addresses.
NINFO provides information on the status of the zone (identical structure to TXT; obsolete).
RKEY saves keys (identical structure to KEY and DNSKEY; obsolete).
Trust anchor link connects two domain names (obsolete).
Child DS is a child copy of a DS record.
Child DNSKEY is a child copy of a DNSKEY record.
OpenPGP key publishes public keys.
Child-to-Parent Synchronization enables the comparison of parent and child zones (obsolete).
Message Digest for DNS Zone is experimental (obsolete).
n / A
Sender Policy Framework was replaced by the TXT record (obsolete).
NodeID is experimental.
32-bit locator is experimental.
64-bit locator is experimental.
Locator pointer is experimental.
48-bit Extended Unique Identifier encrypts addresses.
64-bit Extended Unique Identifier encrypts addresses.
n / A
Transaction Key enables the exchange of secret keys.
Transaction Signature is used for authentication.
Incremental Zone Transfer allows parts of a zone file to be updated on a second server (obsolete).
AFXR transfers a complete zone file to a second server (obsolete).
Mailbox asks for entries around a mailbox (obsolete).
Mail agent was replaced by the MX record (obsolete).
* asks for all entries (obsolete).
Uniform Resource Identifier publishes the mapping of host names to URIs.
Certificate Authority Authorization specifies the possible CAs for a domain.
Application Visibility and Control contains application metadata for DNS-AS (obsolete).
DOA is no longer active (obsolete).
Automatic multicast tunneling relay enables AMT relays to be found (obsolete).
n / A
DNSSEC Trust Authorities enables DNSSEC without signed root.
DNSSEC Lookaside Validation publishes Trust Anchors outside the normal DNS chain.
n / A
n / A
For private use.
n / A
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